Author Topic: spark plug  (Read 7649 times)

Offline VileZambonie

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Re: spark plug
« Reply #15 on: August 09, 2008, 04:23:02 pm »
Not sure if you'll notice a difference but those are the correct plugs for those heads.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 82Shortbed

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Re: spark plug
« Reply #16 on: August 09, 2008, 10:08:29 pm »
Plugs I've seen other guys use other than the 41-932s are

Autolite 605s
NGK TR6, TR5, TR55GP
AC R43-R45 LTS. (Notice the L.....I just tell people it means Long Tapered Seat)
'82 Custom Deluxe
350, 882s, stock cam...For Now